diff options
| -rw-r--r-- | sys/netinet/if_ether.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sys/netinet/if_ether.c b/sys/netinet/if_ether.c index 68b2221..1bd85a3 100644 --- a/sys/netinet/if_ether.c +++ b/sys/netinet/if_ether.c @@ -427,6 +427,21 @@ arpresolve(ifp, rt, m, dst, desten, rt0) */ if ((rt->rt_expire == 0 || rt->rt_expire > time_second) && sdl->sdl_family == AF_LINK && sdl->sdl_alen != 0) { + /* + * If entry has an expiry time and it is approaching, + * see if we need to send an ARP request within this + * arpt_down interval. + */ + if ((rt->rt_expire != 0) && + (time_second + (arp_maxtries - la->la_asked) * arpt_down > + rt->rt_expire)) { + arprequest(ifp, + &SIN(rt->rt_ifa->ifa_addr)->sin_addr, + &SIN(dst)->sin_addr, + IF_LLADDR(ifp)); + la->la_asked++; + } + bcopy(LLADDR(sdl), desten, sdl->sdl_alen); return 1; } |
