lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 04 Mar 2013 19:09:19 +0900 From: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org> To: David Miller <davem@...emloft.net> CC: Lorenzo Colitti <lorenzo@...gle.com>, netdev@...r.kernel.org, Eric Dumazet <edumazet@...gle.com> Subject: Re: [PATCH] net: ipv6: Don't purge default router if accept_ra=2 Lorenzo Colitti wrote: > Setting net.ipv6.conf.<interface>.accept_ra=2 causes the kernel > to accept RAs even when forwarding is enabled. However, enabling > forwarding purges all default routes on the system, breaking > connectivity until the next RA is received. Fix this by not > purging default routes on interfaces that have accept_ra=2. > > Signed-off-by: Lorenzo Colitti <lorenzo@...gle.com> > --- > net/ipv6/route.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/net/ipv6/route.c b/net/ipv6/route.c > index 9282665..e5fe004 100644 > --- a/net/ipv6/route.c > +++ b/net/ipv6/route.c > @@ -1915,7 +1915,8 @@ void rt6_purge_dflt_routers(struct net *net) > restart: > read_lock_bh(&table->tb6_lock); > for (rt = table->tb6_root.leaf; rt; rt = rt->dst.rt6_next) { > - if (rt->rt6i_flags & (RTF_DEFAULT | RTF_ADDRCONF)) { > + if (rt->rt6i_flags & (RTF_DEFAULT | RTF_ADDRCONF) && > + (!rt->rt6i_idev || rt->rt6i_idev->cnf.accept_ra != 2)) { > dst_hold(&rt->dst); > read_unlock_bh(&table->tb6_lock); > ip6_del_rt(rt); > Acked-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org> --yoshfuji -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists