dns-configuration: add in_addr_union field to DNSServer type

This makes it easier to use DNSServer with helpers from in-addr-util.h.

src/shared/dns-configuration.c

@@ -58,6 +58,7 @@ static int dispatch_dns_server(const char *name, sd_json_variant *variant, sd_js
                 return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL),
                                 "Dispatched address size (%zu) is incompatible with the family (%s).",
                                 s->addr.iov_len, af_to_ipv4_ipv6(s->family));
+        memcpy_safe(&s->in_addr, s->addr.iov_base, s->addr.iov_len);
 
         *ret = TAKE_PTR(s);
 

src/shared/dns-configuration.h

@@ -3,6 +3,7 @@
 
 #include <sys/uio.h>
 
+#include "in-addr-util.h"
 #include "shared-forward.h"
 
 typedef struct DNSServer {
@@ -12,6 +13,7 @@ typedef struct DNSServer {
         int ifindex;
         char *server_name;
         bool accessible;
+        union in_addr_union in_addr;
 } DNSServer;
 
 DNSServer* dns_server_free(DNSServer *s);