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pattr: fixed ipv6 routes sending #6

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pattr: fixed ipv6 routes sending #6

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6a57b56
pattr: fixed ipv6 routes sending
Jun 11, 2024
96b05cb
pattr: MP_(UN)REACH_NLRI may contain "extended" pattr.
Aug 1, 2024
32116df
patth: log message fix
Aug 16, 2024
342c2c4
pattr: fixed value length check in BgpPathAttribMpNlriBase.
Aug 19, 2024
d8599d8
pattr: added extended attribute flag support for AsPath and Mp(Un)Reach.
Sep 9, 2024
be798e3
fsm: fixed alterNexthop6.
Apr 22, 2025
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4 changes: 3 additions & 1 deletion src/bgp-afi.h
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ namespace libbgp {
*
*/
enum Afi {
UNKNOWN_AFI = 0,
IPV4 = 1,
IPV6 = 2
};
Expand All @@ -27,11 +28,12 @@ enum Afi {
*
*/
enum Safi {
UNKNOWN_SAFI = 0,
UNICAST = 1,
MULTICAST = 2,
UNICAST_AND_MULTICAST = 3
};

};

#endif // BGP_AFI_H_
#endif // BGP_AFI_H_
17 changes: 11 additions & 6 deletions src/bgp-fsm.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -496,7 +496,7 @@ bool BgpFsm::handleRoute6AddEvent(const Route6AddEvent &ev) {
std::vector<Prefix6> routes;
const uint8_t *nh_global = ev.nexthop_global;
const uint8_t *nh_local = ev.nexthop_linklocal;
alterNexthop6(nh_local, nh_global);
alterNexthop6(nh_global, nh_local);

for (const Prefix6 &route : *(ev.new_routes)) {
if (config.out_filters6.apply(route, *(ev.shared_attribs))) {
Expand Down Expand Up @@ -565,7 +565,7 @@ bool BgpFsm::handleRoute6AddEvent(const Route6AddEvent &ev) {
update.setAttribs(entry.attribs);
const uint8_t *nh_global = entry.nexthop_global;
const uint8_t *nh_local = entry.nexthop_linklocal;
alterNexthop6(nh_local, nh_global);
alterNexthop6(nh_global, nh_local);
std::vector<Prefix6> routes;
routes.push_back(entry.route);
update.setNlri6(routes, nh_global, nh_local);
Expand Down Expand Up @@ -722,17 +722,22 @@ void BgpFsm::alterNexthop4 (BgpUpdateMessage &update) {
}

void BgpFsm::alterNexthop6 (const uint8_t* &nh_global, const uint8_t* &nh_local) {
if (config.forced_default_nexthop6 && !config.peering_lan6.includes(nh_global) && !ibgp && !config.ibgp_alter_nexthop) {
// ibgp
if (ibgp && !config.ibgp_alter_nexthop) return;

if (config.forced_default_nexthop6 || !config.peering_lan6.includes(nh_global)) {
LIBBGP_LOG(logger, INFO) {
char nh_old_str[INET6_ADDRSTRLEN];
char nh_def_str[INET6_ADDRSTRLEN];
char nh_def_ll_str[INET6_ADDRSTRLEN];
inet_ntop(AF_INET6, &nh_global, nh_old_str, INET6_ADDRSTRLEN);
inet_ntop(AF_INET6, &nh_def_str, nh_def_str, INET6_ADDRSTRLEN);
inet_ntop(AF_INET6, &config.default_nexthop6_global, nh_def_str, INET6_ADDRSTRLEN);
inet_ntop(AF_INET6, &config.default_nexthop6_linklocal, nh_def_ll_str, INET6_ADDRSTRLEN);

if (config.forced_default_nexthop6) {
logger->log(INFO, "BgpFsm::alterNexthop6: forced_default_nexthop6 set, default (%s) will be used.\n", nh_def_str);
logger->log(INFO, "BgpFsm::alterNexthop6: forced_default_nexthop6 set, default (%s) and link local (%s) will be used.\n", nh_def_str, nh_def_ll_str);
}
else logger->log(INFO, "BgpFsm::alterNexthop6: nexthop %s is not in peering lan, default (%s) will be used.\n", nh_old_str, nh_def_str);
else logger->log(INFO, "BgpFsm::alterNexthop6: nexthop %s is not in peering lan, default (%s) and link local (%s) will be used.\n", nh_old_str, nh_def_str, nh_def_ll_str);
}

nh_global = config.default_nexthop6_global;
Expand Down
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