-static int pipe_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- int *counter = userdata;
- int r;
-
- (*counter) --;
-
- r = sd_rtnl_message_get_errno(m);
-
- return r == -EEXIST ? 0 : r;
-}
-
-static int add_addresses(sd_rtnl *rtnl, int if_loopback, struct in_addr *ipv4_address, int *counter) {
- _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *ipv4 = NULL, *ipv6 = NULL;
- int r;
-
- r = sd_rtnl_message_addr_new(RTM_NEWADDR, if_loopback, AF_INET, 8, IFA_F_PERMANENT, RT_SCOPE_HOST, &ipv4);
- if (r < 0)
- return r;
-
- r = sd_rtnl_message_append_in_addr(ipv4, IFA_LOCAL, ipv4_address);
- if (r < 0)
- return r;
-
- r = sd_rtnl_call_async(rtnl, ipv4, &pipe_handler, counter, 0, NULL);
- if (r < 0)
- return r;
-
- (*counter) ++;
-
- if (!socket_ipv6_is_supported())
- return 0;
-
- r = sd_rtnl_message_addr_new(RTM_NEWADDR, if_loopback, AF_INET6, 128, 0, 0, &ipv6);
- if (r < 0)
- return r;
-
- r = sd_rtnl_message_append_in6_addr(ipv6, IFA_LOCAL, &in6addr_loopback);
- if (r < 0)
- return r;
-
- r = sd_rtnl_call_async(rtnl, ipv6, &pipe_handler, counter, 0, NULL);
- if (r < 0)
- return r;
-
- (*counter) ++;
-
- return 0;
-}