docs: use the real WireGuard tunnel addresses in the prod peering configs

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

docs/lab/prod/bird-ferrix.conf

@@ -51,8 +51,8 @@ filter ferrix_import
 protocol bgp ferrix
 {
     description "ferrix_bgp teaching lab (announce only)";
-    local fd00:179::1 as 210036;
-    neighbor fd00:179::2 as FERRIX_ASN;
+    local 2a0d:d747:1::1 as 210036;
+    neighbor 2a0d:d747:1:: as FERRIX_ASN;
     direct;
 
     # ferrix dials us. Staying passive avoids log noise from failed attempts

docs/lab/prod/ferrix.textpb

@@ -5,11 +5,11 @@ local_asn: 4200000001            # private; stripped by the production router
 
 # IPv6 prefixes are only announced over an IPv6 session, and the next hop is
 # our end of it, so listen and dial on the tunnel's IPv6 address.
-listen_endpoints { address: "fd00:179::2" port: 179 }
+listen_endpoints { address: "2a0d:d747:1::" port: 179 }
 
 peers {
     name: "prod"
-    endpoint { address: "fd00:179::1" port: 179 }
+    endpoint { address: "2a0d:d747:1::1" port: 179 }
     remote_asn: 210036
     hold_time_seconds: 90
 }