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bonding: NS target should accept link local address

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When setting bond NS target, we use bond_is_ip6_target_ok() to check
if the address valid. The link local address was wrongly rejected in
bond_changelink(), as most time the user just set the ARP/NS target to
gateway, while the IPv6 gateway is always a link local address when user
set up interface via SLAAC.

So remove the link local addr check when setting bond NS target.

Fixes: 129e3c1bab ("bonding: add new option ns_ip6_target")
Reported-by: Li Liang <liali@redhat.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Jonathan Toppins <jtoppins@redhat.com>
Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hangbin Liu 2022-05-27 14:44:39 +08:00 committed by David S. Miller
parent 911799172d
commit 5e1eeef69c
1 changed files with 0 additions and 5 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/net/bonding/bond_netlink.c
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@ -290,11 +290,6 @@ static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[],
addr6 = nla_get_in6_addr(attr);
if (ipv6_addr_type(&addr6) & IPV6_ADDR_LINKLOCAL) {
NL_SET_ERR_MSG(extack, "Invalid IPv6 addr6");
return -EINVAL;
}
bond_opt_initextra(&newval, &addr6, sizeof(addr6));
err = __bond_opt_set(bond, BOND_OPT_NS_TARGETS,
&newval);