From 203639c449d1bf721eebfc6f054d5198b014ce4a Mon Sep 17 00:00:00 2001 From: Robert Watson Date: Thu, 26 Sep 2002 19:56:43 +0000 Subject: [PATCH] Apparently pxeboot passes in a mygateway of non-zero sin length from DHCP in the event that no gateway is returned from DHCP, breaking the assumption that we skip the routing insertion of the gateway if the sin length is zero. Check also for s_addr of 0 to avoid the "Oh no, adding my default route failed" panic, making it possible to pxeboot machines on segments without default routes. Arguably this could be a bug in pxeboot, or in the TUNABLE code, but this makes my boxes boot. --- sys/nfsclient/nfs_vfsops.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/sys/nfsclient/nfs_vfsops.c b/sys/nfsclient/nfs_vfsops.c index 04deade983b..f30690a5884 100644 --- a/sys/nfsclient/nfs_vfsops.c +++ b/sys/nfsclient/nfs_vfsops.c @@ -443,8 +443,13 @@ nfs_mountroot(struct mount *mp, struct thread *td) /* * If the gateway field is filled in, set it as the default route. + * Note that pxeboot will set a default route of 0 if the route + * is not set by the DHCP server. Check also for a value of 0 + * to avoid panicking inappropriately in that situation. */ - if (nd->mygateway.sin_len != 0) { + printf("gateway: %d bytes\n", nd->mygateway.sin_len); + if (nd->mygateway.sin_len != 0 && + nd->mygateway.sin_addr.s_addr != 0) { struct sockaddr_in mask, sin; bzero((caddr_t)&mask, sizeof(mask));