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net: ipv6: add socket option IPV6_ROUTER_ALERT_ISOLATE

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By default IPv6 socket with IPV6_ROUTER_ALERT socket option set will
receive all IPv6 RA packets from all namespaces.
IPV6_ROUTER_ALERT_ISOLATE socket option restricts packets received by
the socket to be only from the socket's namespace.

Signed-off-by: Maxim Martynov <maxim@arista.com>
Signed-off-by: Francesco Ruggeri <fruggeri@arista.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Francesco Ruggeri
2019-03-01 15:31:03 -08:00
committed by David S. Miller
parent 46d841105d
commit 9036b2fe09
4 changed files with 19 additions and 1 deletions
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1
include/uapi/linux/in6.h
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@@ -178,6 +178,7 @@ struct in6_flowlabel_req {
#define IPV6_JOIN_ANYCAST 27
#define IPV6_LEAVE_ANYCAST 28
#define IPV6_MULTICAST_ALL 29
#define IPV6_ROUTER_ALERT_ISOLATE 30
/* IPV6_MTU_DISCOVER values */
#define IPV6_PMTUDISC_DONT 0