If IPv6 address privacy is active, the "clientaddr" given to the server will likely be a temporary address which will eventually expire, thus breaking callback. So ask for a public address to ensure continued service. Signed-off-by: NeilBrown <neilb@xxxxxxxx> --- utils/mount/network.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/utils/mount/network.c b/utils/mount/network.c index 0d12613e86a4..7dceb2db3b93 100644 --- a/utils/mount/network.c +++ b/utils/mount/network.c @@ -38,6 +38,7 @@ #include <sys/socket.h> #include <sys/wait.h> #include <sys/stat.h> +#include <linux/in6.h> #include <netinet/in.h> #include <rpc/rpc.h> #include <rpc/pmap_prot.h> @@ -1113,6 +1114,7 @@ static int nfs_ca_sockname(const struct sockaddr *sap, const socklen_t salen, .sin6_addr = IN6ADDR_ANY_INIT, }; int sock, result = 0; + int val; sock = socket(sap->sa_family, SOCK_DGRAM, IPPROTO_UDP); if (sock < 0) @@ -1124,6 +1126,9 @@ static int nfs_ca_sockname(const struct sockaddr *sap, const socklen_t salen, goto out; break; case AF_INET6: + /* Make sure the call-back address is public/permanent */ + val = IPV6_PREFER_SRC_PUBLIC; + setsockopt(sock, SOL_IPV6, IPV6_ADDR_PREFERENCES, &val, sizeof(val)); if (bind(sock, SAFE_SOCKADDR(&sin6), sizeof(sin6)) < 0) goto out; break; -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
