diff options
| -rw-r--r-- | src/libsystemd-network/icmp6-util.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/libsystemd-network/icmp6-util.c b/src/libsystemd-network/icmp6-util.c index acad9d7d6a..d81e9ebd88 100644 --- a/src/libsystemd-network/icmp6-util.c +++ b/src/libsystemd-network/icmp6-util.c @@ -26,6 +26,7 @@ #include <sys/socket.h> #include <sys/types.h> #include <unistd.h> +#include <net/if.h> #include <linux/if_packet.h> #include "fd-util.h" @@ -47,6 +48,7 @@ int icmp6_bind_router_solicitation(int index) { .ipv6mr_interface = index, }; _cleanup_close_ int s = -1; + char ifname[IF_NAMESIZE] = ""; int r, zero = 0, one = 1, hops = 255; s = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC | SOCK_NONBLOCK, IPPROTO_ICMPV6); @@ -83,6 +85,13 @@ int icmp6_bind_router_solicitation(int index) { if (r < 0) return -errno; + if (if_indextoname(index, ifname) == 0) + return -errno; + + r = setsockopt(s, SOL_SOCKET, SO_BINDTODEVICE, ifname, strlen(ifname)); + if (r < 0) + return -errno; + r = s; s = -1; return r; |