diff options
| author | Stephen Suryaputra <ssuryaextr@gmail.com> | 2021-10-20 16:06:18 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-26 11:40:28 +0100 |
| commit | c668b939540043b584084dd63daff8fc750d67ac (patch) | |
| tree | c78d22f8a2204a3bbbfe053b552979ef49da12e6 | |
| parent | 4b13da142af66cf869ee4ea0e53e9381e7dbfc9a (diff) | |
| download | linux-rt-c668b939540043b584084dd63daff8fc750d67ac.tar.gz | |
gre/sit: Don't generate link-local addr if addr_gen_mode is IN6_ADDR_GEN_MODE_NONE
[ Upstream commit 61e18ce7348bfefb5688a8bcd4b4d6b37c0f9b2a ]
When addr_gen_mode is set to IN6_ADDR_GEN_MODE_NONE, the link-local addr
should not be generated. But it isn't the case for GRE (as well as GRE6)
and SIT tunnels. Make it so that tunnels consider the addr_gen_mode,
especially for IN6_ADDR_GEN_MODE_NONE.
Do this in add_v4_addrs() to cover both GRE and SIT only if the addr
scope is link.
Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Acked-by: Antonio Quartulli <a@unstable.cc>
Link: https://lore.kernel.org/r/20211020200618.467342-1-ssuryaextr@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | net/ipv6/addrconf.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index e47d5047d537..178a3b26f9d2 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2996,6 +2996,9 @@ static void sit_add_v4_addrs(struct inet6_dev *idev) memcpy(&addr.s6_addr32[3], idev->dev->dev_addr, 4); if (idev->dev->flags&IFF_POINTOPOINT) { + if (idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_NONE) + return; + addr.s6_addr32[0] = htonl(0xfe800000); scope = IFA_LINK; plen = 64; |