Mercurial > hg > dhcpcd
changeset 4268:bd01addbb40f draft
ipv6nd: warn if router lifetime is set to zero
| author | Roy Marples <roy@marples.name> |
|---|---|
| date | Wed, 02 May 2018 22:01:18 +0100 |
| parents | b5284aa7f420 |
| children | 3050be161143 |
| files | src/ipv6nd.c |
| diffstat | 1 files changed, 5 insertions(+), 0 deletions(-) [+] |
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--- a/src/ipv6nd.c Tue May 01 19:55:02 2018 +0100 +++ b/src/ipv6nd.c Wed May 02 22:01:18 2018 +0100 @@ -750,6 +750,7 @@ struct ipv6_addr *ap; struct dhcp_opt *dho; uint8_t new_rap, new_data; + uint32_t old_lifetime; __printflike(1, 2) void (*logfunc)(const char *, ...); #ifdef IPV6_MANAGETEMPADDR uint8_t new_ap; @@ -858,7 +859,11 @@ clock_gettime(CLOCK_MONOTONIC, &rap->acquired); rap->flags = nd_ra->nd_ra_flags_reserved; + old_lifetime = rap->lifetime; rap->lifetime = ntohs(nd_ra->nd_ra_router_lifetime); + if (!new_rap && rap->lifetime == 0 && old_lifetime != 0) + logwarnx("%s: %s: no longer a default router", + ifp->name, rap->sfrom); if (nd_ra->nd_ra_reachable) { rap->reachable = ntohl(nd_ra->nd_ra_reachable); if (rap->reachable > MAX_REACHABLE_TIME)