| Message ID | 20200613092023.gy2e6bktimgf4qjd@localhost |
|---|---|
| State | Accepted |
| Headers | show |
| Series | [ovs-dev,ovn,v4] Honour router_preference for solicited RA | expand |
On Sat, Jun 13, 2020 at 2:50 PM Gabriele Cerami <gcerami@redhat.com> wrote: > Replies to router solicitation follow a different flow than periodic RA. > This flow currently does not honour the router_preference configuration. > > This patch modifies the flow to honour the flag, and send > router-preference indications in the reply RA following RFC4191 > specifications > > Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=1804576 > Signed-off-by: Gabriele Cerami <gcerami@redhat.com> > Thanks. I added your name to the AUTHORS.rst file and applied this patch to master, branch-20.06 and branch-20.03 as it's a bug fix. Thanks Numan > --- > lib/actions.c | 29 +++++++++++++++++++++++++++-- > lib/ovn-l7.h | 5 +++++ > northd/ovn-northd.c | 6 ++++++ > tests/ovn.at | 26 ++++++++++++++++---------- > 4 files changed, 54 insertions(+), 12 deletions(-) > > diff --git a/lib/actions.c b/lib/actions.c > index c50615177..6eac02367 100644 > --- a/lib/actions.c > +++ b/lib/actions.c > @@ -2535,6 +2535,12 @@ parse_put_nd_ra_opts(struct action_context *ctx, > const struct expr_field *dst, > } > break; > > + case ND_RA_FLAG_PRF: > + ok = (c->string && (!strcmp(c->string, "MEDIUM") || > + !strcmp(c->string, "HIGH") || > + !strcmp(c->string, "LOW"))); > + break; > + > case ND_OPT_SOURCE_LINKADDR: > ok = c->format == LEX_F_ETHERNET; > slla_present = true; > @@ -2589,9 +2595,22 @@ encode_put_nd_ra_option(const struct > ovnact_gen_option *o, > { > struct ovs_ra_msg *ra = ofpbuf_at(ofpacts, ra_offset, sizeof *ra); > if (!strcmp(c->string, "dhcpv6_stateful")) { > - ra->mo_flags = IPV6_ND_RA_FLAG_MANAGED_ADDR_CONFIG; > + ra->mo_flags |= IPV6_ND_RA_FLAG_MANAGED_ADDR_CONFIG; > } else if (!strcmp(c->string, "dhcpv6_stateless")) { > - ra->mo_flags = IPV6_ND_RA_FLAG_OTHER_ADDR_CONFIG; > + ra->mo_flags |= IPV6_ND_RA_FLAG_OTHER_ADDR_CONFIG; > + } > + break; > + } > + > + case ND_RA_FLAG_PRF: > + { > + struct ovs_ra_msg *ra = ofpbuf_at(ofpacts, ra_offset, sizeof *ra); > + if (!strcmp(c->string, "LOW")) { > + ra->mo_flags |= IPV6_ND_RA_OPT_PRF_LOW; > + } else if (!strcmp(c->string, "HIGH")) { > + ra->mo_flags |= IPV6_ND_RA_OPT_PRF_HIGH; > + } else { > + ra->mo_flags |= IPV6_ND_RA_OPT_PRF_NORMAL; > } > break; > } > @@ -2672,6 +2691,12 @@ encode_PUT_ND_RA_OPTS(const struct ovnact_put_opts > *po, > encode_put_nd_ra_option(o, ofpacts, ra_offset); > } > > + /* RFC4191 section 2.2 */ > + struct ovs_ra_msg *new_ra = ofpbuf_at(ofpacts, ra_offset, sizeof > *new_ra); > + if (ntohs(new_ra->router_lifetime) == 0) { > + new_ra->mo_flags &= IPV6_ND_RA_OPT_PRF_RESET_MASK; > + } > + > encode_finish_controller_op(oc_offset, ofpacts); > } > > diff --git a/lib/ovn-l7.h b/lib/ovn-l7.h > index cc63d822d..d5c6feaeb 100644 > --- a/lib/ovn-l7.h > +++ b/lib/ovn-l7.h > @@ -309,6 +309,9 @@ nd_ra_opts_destroy(struct hmap *nd_ra_opts) > > > #define ND_RA_FLAG_ADDR_MODE 0 > +/* all small numbers seems to be all already taken but nothing guarantees > this > + * code will not be assigned by IANA to another option */ > +#define ND_RA_FLAG_PRF 255 > > > /* Default values of various IPv6 Neighbor Discovery protocol options and > @@ -330,11 +333,13 @@ nd_ra_opts_destroy(struct hmap *nd_ra_opts) > #define IPV6_ND_RA_OPT_PRF_NORMAL 0x00 > #define IPV6_ND_RA_OPT_PRF_HIGH 0x08 > #define IPV6_ND_RA_OPT_PRF_LOW 0x18 > +#define IPV6_ND_RA_OPT_PRF_RESET_MASK 0xe7 > > static inline void > nd_ra_opts_init(struct hmap *nd_ra_opts) > { > nd_ra_opt_add(nd_ra_opts, "addr_mode", ND_RA_FLAG_ADDR_MODE, "str"); > + nd_ra_opt_add(nd_ra_opts, "router_preference", ND_RA_FLAG_PRF, "str"); > nd_ra_opt_add(nd_ra_opts, "slla", ND_OPT_SOURCE_LINKADDR, "mac"); > nd_ra_opt_add(nd_ra_opts, "prefix", ND_OPT_PREFIX_INFORMATION, > "ipv6"); > nd_ra_opt_add(nd_ra_opts, "mtu", ND_OPT_MTU, "uint32"); > diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c > index eb78f317e..e7815bfc3 100644 > --- a/northd/ovn-northd.c > +++ b/northd/ovn-northd.c > @@ -9452,6 +9452,12 @@ build_lrouter_flows(struct hmap *datapaths, struct > hmap *ports, > ds_put_format(&actions, ", mtu = %u", mtu); > } > > + const char *prf = smap_get_def( > + &op->nbrp->ipv6_ra_configs, "router_preference", "MEDIUM"); > + if (strcmp(prf, "MEDIUM")) { > + ds_put_format(&actions, ", router_preference = \"%s\"", prf); > + } > + > bool add_rs_response_flow = false; > > for (size_t i = 0; i < op->lrp_networks.n_ipv6_addrs; i++) { > diff --git a/tests/ovn.at b/tests/ovn.at > index 15b40ca1e..335c54f98 100644 > --- a/tests/ovn.at > +++ b/tests/ovn.at > @@ -1379,14 +1379,14 @@ log(severity=notice); > Syntax error at `;' expecting verdict. > > # put_nd_ra_opts > -reg1[0] = put_nd_ra_opts(addr_mode = "slaac", mtu = 1500, prefix = > aef0::/64, slla = ae:01:02:03:04:05); > - encodes as > controller(userdata=00.00.00.08.00.00.00.00.00.01.de.10.00.00.00.40.86.00.00.00.ff.00.ff.ff.00.00.00.00.00.00.00.00.05.01.00.00.00.00.05.dc.03.04.40.c0.ff.ff.ff.ff.ff.ff.ff.ff.00.00.00.00.ae.f0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.01.ae.01.02.03.04.05,pause) > +reg1[0] = put_nd_ra_opts(addr_mode = "slaac", mtu = 1500, > router_preference = "HIGH", prefix = aef0::/64, slla = ae:01:02:03:04:05); > + encodes as > controller(userdata=00.00.00.08.00.00.00.00.00.01.de.10.00.00.00.40.86.00.00.00.ff.08.ff.ff.00.00.00.00.00.00.00.00.05.01.00.00.00.00.05.dc.03.04.40.c0.ff.ff.ff.ff.ff.ff.ff.ff.00.00.00.00.ae.f0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.01.ae.01.02.03.04.05,pause) > has prereqs ip6 > -reg1[0] = put_nd_ra_opts(addr_mode = "dhcpv6_stateful", slla = > ae:01:02:03:04:10, mtu = 1450); > +reg1[0] = put_nd_ra_opts(addr_mode = "dhcpv6_stateful", router_preference > = "MEDIUM", slla = ae:01:02:03:04:10, mtu = 1450); > encodes as > controller(userdata=00.00.00.08.00.00.00.00.00.01.de.10.00.00.00.40.86.00.00.00.ff.80.ff.ff.00.00.00.00.00.00.00.00.01.01.ae.01.02.03.04.10.05.01.00.00.00.00.05.aa,pause) > has prereqs ip6 > -reg1[0] = put_nd_ra_opts(addr_mode = "dhcpv6_stateless", slla = > ae:01:02:03:04:06, prefix = aef0::/64); > - encodes as > controller(userdata=00.00.00.08.00.00.00.00.00.01.de.10.00.00.00.40.86.00.00.00.ff.40.ff.ff.00.00.00.00.00.00.00.00.01.01.ae.01.02.03.04.06.03.04.40.c0.ff.ff.ff.ff.ff.ff.ff.ff.00.00.00.00.ae.f0.00.00.00.00.00.00.00.00.00.00.00.00.00.00,pause) > +reg1[0] = put_nd_ra_opts(addr_mode = "dhcpv6_stateless", > router_preference = "LOW", slla = ae:01:02:03:04:06, prefix = aef0::/64); > + encodes as > controller(userdata=00.00.00.08.00.00.00.00.00.01.de.10.00.00.00.40.86.00.00.00.ff.58.ff.ff.00.00.00.00.00.00.00.00.01.01.ae.01.02.03.04.06.03.04.40.c0.ff.ff.ff.ff.ff.ff.ff.ff.00.00.00.00.ae.f0.00.00.00.00.00.00.00.00.00.00.00.00.00.00,pause) > has prereqs ip6 > reg1[0] = put_nd_ra_opts(addr_mode = "slaac", mtu = 1500, prefix = > aef0::/64); > slla option not present > @@ -10619,13 +10619,16 @@ reset_pcap_file hv1-vif1 hv1/vif1 > reset_pcap_file hv1-vif2 hv1/vif2 > reset_pcap_file hv1-vif3 hv1/vif3 > > -# Set the MTU to 1500 > +# Set the MTU to 1500, send_periodic to false, preference to LOW > ovn-nbctl --wait=hv set Logical_Router_Port lrp0 ipv6_ra_configs:mtu=1500 > +ovn-nbctl --wait=hv set Logical_Router_Port lrp0 > ipv6_ra_configs:send_periodic="false" > +ovn-nbctl --wait=hv set Logical_Router_Port lrp0 > ipv6_ra_configs:router_preference="LOW" > > # Make sure that ovn-controller has installed the corresponding OF Flow. > OVS_WAIT_UNTIL([test 1 = `as hv1 ovs-ofctl dump-flows br-int | grep -c > "ipv6_dst=ff02::2,nw_ttl=255,icmp_type=133,icmp_code=0"`]) > > -addr_mode=00 > +# addr_mode byte also includes router preference information > +addr_mode=18 > default_prefix_option_config=030440c0ffffffffffffffff00000000 > src_mac=fa163e000003 > src_lla=fe80000000000000f8163efffe000003 > @@ -10650,12 +10653,14 @@ reset_pcap_file hv1-vif1 hv1/vif1 > reset_pcap_file hv1-vif2 hv1/vif2 > reset_pcap_file hv1-vif3 hv1/vif3 > > -# Set the address mode to dhcpv6_stateful > +# Set the address mode to dhcpv6_stateful, router_preference to HIGH > ovn-nbctl --wait=hv set Logical_Router_Port lrp0 > ipv6_ra_configs:address_mode=dhcpv6_stateful > +ovn-nbctl --wait=hv set Logical_Router_Port lrp0 > ipv6_ra_configs:router_preference="HIGH" > # Make sure that ovn-controller has installed the corresponding OF Flow. > OVS_WAIT_UNTIL([test 1 = `as hv1 ovs-ofctl dump-flows br-int | grep -c > "ipv6_dst=ff02::2,nw_ttl=255,icmp_type=133,icmp_code=0"`]) > > -addr_mode=80 > +# addr_mode byte also includes router preference information > +addr_mode=88 > default_prefix_option_config=03044080ffffffffffffffff00000000 > src_mac=fa163e000004 > src_lla=fe80000000000000f8163efffe000004 > @@ -10680,8 +10685,9 @@ reset_pcap_file hv1-vif1 hv1/vif1 > reset_pcap_file hv1-vif2 hv1/vif2 > reset_pcap_file hv1-vif3 hv1/vif3 > > -# Set the address mode to dhcpv6_stateless > +# Set the address mode to dhcpv6_stateless, reset router preference to > default > ovn-nbctl --wait=hv set Logical_Router_Port lrp0 > ipv6_ra_configs:address_mode=dhcpv6_stateless > +ovn-nbctl --wait=hv set Logical_Router_Port lrp0 > ipv6_ra_configs:router_preference="MEDIUM" > # Make sure that ovn-controller has installed the corresponding OF Flow. > OVS_WAIT_UNTIL([test 1 = `as hv1 ovs-ofctl dump-flows br-int | grep -c > "ipv6_dst=ff02::2,nw_ttl=255,icmp_type=133,icmp_code=0"`]) > > -- > 2.11.0 > > _______________________________________________ > dev mailing list > dev@openvswitch.org > https://mail.openvswitch.org/mailman/listinfo/ovs-dev > >
diff --git a/lib/actions.c b/lib/actions.c index c50615177..6eac02367 100644 --- a/lib/actions.c +++ b/lib/actions.c @@ -2535,6 +2535,12 @@ parse_put_nd_ra_opts(struct action_context *ctx, const struct expr_field *dst, } break; + case ND_RA_FLAG_PRF: + ok = (c->string && (!strcmp(c->string, "MEDIUM") || + !strcmp(c->string, "HIGH") || + !strcmp(c->string, "LOW"))); + break; + case ND_OPT_SOURCE_LINKADDR: ok = c->format == LEX_F_ETHERNET; slla_present = true; @@ -2589,9 +2595,22 @@ encode_put_nd_ra_option(const struct ovnact_gen_option *o, { struct ovs_ra_msg *ra = ofpbuf_at(ofpacts, ra_offset, sizeof *ra); if (!strcmp(c->string, "dhcpv6_stateful")) { - ra->mo_flags = IPV6_ND_RA_FLAG_MANAGED_ADDR_CONFIG; + ra->mo_flags |= IPV6_ND_RA_FLAG_MANAGED_ADDR_CONFIG; } else if (!strcmp(c->string, "dhcpv6_stateless")) { - ra->mo_flags = IPV6_ND_RA_FLAG_OTHER_ADDR_CONFIG; + ra->mo_flags |= IPV6_ND_RA_FLAG_OTHER_ADDR_CONFIG; + } + break; + } + + case ND_RA_FLAG_PRF: + { + struct ovs_ra_msg *ra = ofpbuf_at(ofpacts, ra_offset, sizeof *ra); + if (!strcmp(c->string, "LOW")) { + ra->mo_flags |= IPV6_ND_RA_OPT_PRF_LOW; + } else if (!strcmp(c->string, "HIGH")) { + ra->mo_flags |= IPV6_ND_RA_OPT_PRF_HIGH; + } else { + ra->mo_flags |= IPV6_ND_RA_OPT_PRF_NORMAL; } break; } @@ -2672,6 +2691,12 @@ encode_PUT_ND_RA_OPTS(const struct ovnact_put_opts *po, encode_put_nd_ra_option(o, ofpacts, ra_offset); } + /* RFC4191 section 2.2 */ + struct ovs_ra_msg *new_ra = ofpbuf_at(ofpacts, ra_offset, sizeof *new_ra); + if (ntohs(new_ra->router_lifetime) == 0) { + new_ra->mo_flags &= IPV6_ND_RA_OPT_PRF_RESET_MASK; + } + encode_finish_controller_op(oc_offset, ofpacts); } diff --git a/lib/ovn-l7.h b/lib/ovn-l7.h index cc63d822d..d5c6feaeb 100644 --- a/lib/ovn-l7.h +++ b/lib/ovn-l7.h @@ -309,6 +309,9 @@ nd_ra_opts_destroy(struct hmap *nd_ra_opts) #define ND_RA_FLAG_ADDR_MODE 0 +/* all small numbers seems to be all already taken but nothing guarantees this + * code will not be assigned by IANA to another option */ +#define ND_RA_FLAG_PRF 255 /* Default values of various IPv6 Neighbor Discovery protocol options and @@ -330,11 +333,13 @@ nd_ra_opts_destroy(struct hmap *nd_ra_opts) #define IPV6_ND_RA_OPT_PRF_NORMAL 0x00 #define IPV6_ND_RA_OPT_PRF_HIGH 0x08 #define IPV6_ND_RA_OPT_PRF_LOW 0x18 +#define IPV6_ND_RA_OPT_PRF_RESET_MASK 0xe7 static inline void nd_ra_opts_init(struct hmap *nd_ra_opts) { nd_ra_opt_add(nd_ra_opts, "addr_mode", ND_RA_FLAG_ADDR_MODE, "str"); + nd_ra_opt_add(nd_ra_opts, "router_preference", ND_RA_FLAG_PRF, "str"); nd_ra_opt_add(nd_ra_opts, "slla", ND_OPT_SOURCE_LINKADDR, "mac"); nd_ra_opt_add(nd_ra_opts, "prefix", ND_OPT_PREFIX_INFORMATION, "ipv6"); nd_ra_opt_add(nd_ra_opts, "mtu", ND_OPT_MTU, "uint32"); diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c index eb78f317e..e7815bfc3 100644 --- a/northd/ovn-northd.c +++ b/northd/ovn-northd.c @@ -9452,6 +9452,12 @@ build_lrouter_flows(struct hmap *datapaths, struct hmap *ports, ds_put_format(&actions, ", mtu = %u", mtu); } + const char *prf = smap_get_def( + &op->nbrp->ipv6_ra_configs, "router_preference", "MEDIUM"); + if (strcmp(prf, "MEDIUM")) { + ds_put_format(&actions, ", router_preference = \"%s\"", prf); + } + bool add_rs_response_flow = false; for (size_t i = 0; i < op->lrp_networks.n_ipv6_addrs; i++) { diff --git a/tests/ovn.at b/tests/ovn.at index 15b40ca1e..335c54f98 100644 --- a/tests/ovn.at +++ b/tests/ovn.at @@ -1379,14 +1379,14 @@ log(severity=notice); Syntax error at `;' expecting verdict. # put_nd_ra_opts -reg1[0] = put_nd_ra_opts(addr_mode = "slaac", mtu = 1500, prefix = aef0::/64, slla = ae:01:02:03:04:05); - encodes as controller(userdata=00.00.00.08.00.00.00.00.00.01.de.10.00.00.00.40.86.00.00.00.ff.00.ff.ff.00.00.00.00.00.00.00.00.05.01.00.00.00.00.05.dc.03.04.40.c0.ff.ff.ff.ff.ff.ff.ff.ff.00.00.00.00.ae.f0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.01.ae.01.02.03.04.05,pause) +reg1[0] = put_nd_ra_opts(addr_mode = "slaac", mtu = 1500, router_preference = "HIGH", prefix = aef0::/64, slla = ae:01:02:03:04:05); + encodes as controller(userdata=00.00.00.08.00.00.00.00.00.01.de.10.00.00.00.40.86.00.00.00.ff.08.ff.ff.00.00.00.00.00.00.00.00.05.01.00.00.00.00.05.dc.03.04.40.c0.ff.ff.ff.ff.ff.ff.ff.ff.00.00.00.00.ae.f0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.01.ae.01.02.03.04.05,pause) has prereqs ip6 -reg1[0] = put_nd_ra_opts(addr_mode = "dhcpv6_stateful", slla = ae:01:02:03:04:10, mtu = 1450); +reg1[0] = put_nd_ra_opts(addr_mode = "dhcpv6_stateful", router_preference = "MEDIUM", slla = ae:01:02:03:04:10, mtu = 1450); encodes as controller(userdata=00.00.00.08.00.00.00.00.00.01.de.10.00.00.00.40.86.00.00.00.ff.80.ff.ff.00.00.00.00.00.00.00.00.01.01.ae.01.02.03.04.10.05.01.00.00.00.00.05.aa,pause) has prereqs ip6 -reg1[0] = put_nd_ra_opts(addr_mode = "dhcpv6_stateless", slla = ae:01:02:03:04:06, prefix = aef0::/64); - encodes as controller(userdata=00.00.00.08.00.00.00.00.00.01.de.10.00.00.00.40.86.00.00.00.ff.40.ff.ff.00.00.00.00.00.00.00.00.01.01.ae.01.02.03.04.06.03.04.40.c0.ff.ff.ff.ff.ff.ff.ff.ff.00.00.00.00.ae.f0.00.00.00.00.00.00.00.00.00.00.00.00.00.00,pause) +reg1[0] = put_nd_ra_opts(addr_mode = "dhcpv6_stateless", router_preference = "LOW", slla = ae:01:02:03:04:06, prefix = aef0::/64); + encodes as controller(userdata=00.00.00.08.00.00.00.00.00.01.de.10.00.00.00.40.86.00.00.00.ff.58.ff.ff.00.00.00.00.00.00.00.00.01.01.ae.01.02.03.04.06.03.04.40.c0.ff.ff.ff.ff.ff.ff.ff.ff.00.00.00.00.ae.f0.00.00.00.00.00.00.00.00.00.00.00.00.00.00,pause) has prereqs ip6 reg1[0] = put_nd_ra_opts(addr_mode = "slaac", mtu = 1500, prefix = aef0::/64); slla option not present @@ -10619,13 +10619,16 @@ reset_pcap_file hv1-vif1 hv1/vif1 reset_pcap_file hv1-vif2 hv1/vif2 reset_pcap_file hv1-vif3 hv1/vif3 -# Set the MTU to 1500 +# Set the MTU to 1500, send_periodic to false, preference to LOW ovn-nbctl --wait=hv set Logical_Router_Port lrp0 ipv6_ra_configs:mtu=1500 +ovn-nbctl --wait=hv set Logical_Router_Port lrp0 ipv6_ra_configs:send_periodic="false" +ovn-nbctl --wait=hv set Logical_Router_Port lrp0 ipv6_ra_configs:router_preference="LOW" # Make sure that ovn-controller has installed the corresponding OF Flow. OVS_WAIT_UNTIL([test 1 = `as hv1 ovs-ofctl dump-flows br-int | grep -c "ipv6_dst=ff02::2,nw_ttl=255,icmp_type=133,icmp_code=0"`]) -addr_mode=00 +# addr_mode byte also includes router preference information +addr_mode=18 default_prefix_option_config=030440c0ffffffffffffffff00000000 src_mac=fa163e000003 src_lla=fe80000000000000f8163efffe000003 @@ -10650,12 +10653,14 @@ reset_pcap_file hv1-vif1 hv1/vif1 reset_pcap_file hv1-vif2 hv1/vif2 reset_pcap_file hv1-vif3 hv1/vif3 -# Set the address mode to dhcpv6_stateful +# Set the address mode to dhcpv6_stateful, router_preference to HIGH ovn-nbctl --wait=hv set Logical_Router_Port lrp0 ipv6_ra_configs:address_mode=dhcpv6_stateful +ovn-nbctl --wait=hv set Logical_Router_Port lrp0 ipv6_ra_configs:router_preference="HIGH" # Make sure that ovn-controller has installed the corresponding OF Flow. OVS_WAIT_UNTIL([test 1 = `as hv1 ovs-ofctl dump-flows br-int | grep -c "ipv6_dst=ff02::2,nw_ttl=255,icmp_type=133,icmp_code=0"`]) -addr_mode=80 +# addr_mode byte also includes router preference information +addr_mode=88 default_prefix_option_config=03044080ffffffffffffffff00000000 src_mac=fa163e000004 src_lla=fe80000000000000f8163efffe000004 @@ -10680,8 +10685,9 @@ reset_pcap_file hv1-vif1 hv1/vif1 reset_pcap_file hv1-vif2 hv1/vif2 reset_pcap_file hv1-vif3 hv1/vif3 -# Set the address mode to dhcpv6_stateless +# Set the address mode to dhcpv6_stateless, reset router preference to default ovn-nbctl --wait=hv set Logical_Router_Port lrp0 ipv6_ra_configs:address_mode=dhcpv6_stateless +ovn-nbctl --wait=hv set Logical_Router_Port lrp0 ipv6_ra_configs:router_preference="MEDIUM" # Make sure that ovn-controller has installed the corresponding OF Flow. OVS_WAIT_UNTIL([test 1 = `as hv1 ovs-ofctl dump-flows br-int | grep -c "ipv6_dst=ff02::2,nw_ttl=255,icmp_type=133,icmp_code=0"`])
Replies to router solicitation follow a different flow than periodic RA. This flow currently does not honour the router_preference configuration. This patch modifies the flow to honour the flag, and send router-preference indications in the reply RA following RFC4191 specifications Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=1804576 Signed-off-by: Gabriele Cerami <gcerami@redhat.com> --- lib/actions.c | 29 +++++++++++++++++++++++++++-- lib/ovn-l7.h | 5 +++++ northd/ovn-northd.c | 6 ++++++ tests/ovn.at | 26 ++++++++++++++++---------- 4 files changed, 54 insertions(+), 12 deletions(-)