Date: Sat, 24 Feb 2018 20:04:09 +0700 From: Eugene Grosbein <eugen@grosbein.net> To: Andreas Longwitz <longwitz@incore.de> Cc: freebsd-net@freebsd.org Subject: Re: loopback routes pinned by commit r326012 for FreeBSD 10 cannot be deleted Message-ID: <5A9162C9.5050206@grosbein.net> In-Reply-To: <5A915C9D.7020000@incore.de> References: <5A9075CB.10408@incore.de> <5A90E679.3030106@grosbein.net> <5A915C9D.7020000@incore.de>
next in thread | previous in thread | raw e-mail | index | archive | help
24.02.2018 19:37, Andreas Longwitz wrote: >> Please test the follwoind patch for the kernel: >> >> --- sys/net/if.c.orig 2018-02-24 08:00:34.578670000 +0700 >> +++ sys/net/if.c 2018-02-24 11:07:57.014318000 +0700 >> @@ -1699,7 +1699,7 @@ ifa_del_loopback_route(struct ifaddr *if >> null_sdl.sdl_type = ifa->ifa_ifp->if_type; >> null_sdl.sdl_index = ifa->ifa_ifp->if_index; >> bzero(&info, sizeof(info)); >> - info.rti_flags = ifa->ifa_flags | RTF_HOST | RTF_STATIC; >> + info.rti_flags = ifa->ifa_flags | RTF_HOST | RTF_STATIC | RTF_PINNED; >> info.rti_info[RTAX_DST] = ia; >> info.rti_info[RTAX_GATEWAY] = (struct sockaddr *)&null_sdl; >> error = rtrequest1_fib(RTM_DELETE, &info, NULL, ifa->ifa_ifp->if_fib); >> > > This patch patch solves the problem for "ifconfig fxp0 delete": now the > kernel removes the loopback route, tested on FreeBSD 10 r328260. Glad to know that. > But deleting the loopback route manually does not work anymore, is this > intended behaviour ? > > I would like to control the routing table as much as possible. This is side effect of loopback routes being intentionally protected with RTF_PINNED flag in recent FreeBSD versions so that link routes can override ones installed by routing daemons. Perhaps, ifconfig(8) utility should be extended to use RTF_PINNED to be able to modify such routes.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?5A9162C9.5050206>