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| author | Roy Marples <roy@marples.name> | 2019-01-26 02:13:29 +0000 |
|---|---|---|
| committer | Roy Marples <roy@marples.name> | 2019-01-26 02:13:29 +0000 |
| commit | 47c4c88b802379aa15675bb6cbb32e36a4386b09 (patch) | |
| tree | 6365f34d1a6265cbc9809d51594d2ca8d857a3b5 /src/if-bsd.c | |
| parent | 734230f69b8f664883a684b6e2dfcc0823adfb1a (diff) | |
| download | dhcpcd-47c4c88b802379aa15675bb6cbb32e36a4386b09.tar.xz | |
FreeBSD: avoid kernel panics when adding on-link IPv6 routes
Also warn that OS does not support IPv6 address sharing.
Diffstat (limited to 'src/if-bsd.c')
| -rw-r--r-- | src/if-bsd.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/if-bsd.c b/src/if-bsd.c index 5ec60eb5..0f4cc008 100644 --- a/src/if-bsd.c +++ b/src/if-bsd.c @@ -501,7 +501,17 @@ if_route(unsigned char cmd, const struct rt *rt) !sa_is_loopback(&rt->rt_gateway)) { rtm->rtm_index = (unsigned short)rt->rt_ifp->index; -#ifdef __OpenBSD__ +/* + * OpenBSD rejects the message for on-link routes. + * FreeBSD-12 kernel apparently panics. + * I can't replicate the panic, but better safe than sorry! + * https://roy.marples.name/archives/dhcpcd-discuss/0002286.html + * + * Neither OS currently allows IPv6 address sharing anyway, so let's + * try to encourage someone to fix that by logging a waring during compile. + */ +#if defined(__FreeBSD__) || defined(__OpenBSD__) +#warning OS does not allow IPv6 address sharing if (!gateway_unspec || rt->rt_dest.sa_family!=AF_INET6) #endif rtm->rtm_addrs |= RTA_IFP; |