tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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ipv6: Fix default multicast hops setting.

As per RFC 3493 the default multicast hops setting
for a socket should be "1" just like ipv4.

Ironically we have a IPV6_DEFAULT_MCASTHOPS macro
it just wasn't being used.

Reported-by: Elliot Hughes <enh@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller f935aa9e 1827d2e9

+1 -1
unified split
+1 -1
net/ipv6/af_inet6.c
··· 200 201 inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); 202 np->hop_limit = -1; 203 - np->mcast_hops = -1; 204 np->mc_loop = 1; 205 np->pmtudisc = IPV6_PMTUDISC_WANT; 206 np->ipv6only = net->ipv6.sysctl.bindv6only;
··· 200 201 inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); 202 np->hop_limit = -1; 203 + np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; 204 np->mc_loop = 1; 205 np->pmtudisc = IPV6_PMTUDISC_WANT; 206 np->ipv6only = net->ipv6.sysctl.bindv6only;