diff options
| -rw-r--r-- | src/socket-util.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/socket-util.c b/src/socket-util.c index a2fa13e594..9b4a1b3b48 100644 --- a/src/socket-util.c +++ b/src/socket-util.c @@ -506,7 +506,21 @@ bool socket_address_needs_mount(const SocketAddress *a, const char *prefix) { } bool socket_ipv6_is_supported(void) { - return access("/sys/module/ipv6", F_OK) == 0; + char *l = 0; + bool enabled; + + if (access("/sys/module/ipv6", F_OK) != 0) + return 0; + + /* If we can't check "disable" parameter, assume enabled */ + if (read_one_line_file("/sys/module/ipv6/parameters/disable", &l) < 0) + return 1; + + /* If module was loaded with disable=1 no IPv6 available */ + enabled = l[0] == '0'; + free(l); + + return enabled; } static const char* const socket_address_bind_ipv6_only_table[_SOCKET_ADDRESS_BIND_IPV6_ONLY_MAX] = { |