Update IANA special-purpose address registries (#8277)

Author: github-actions[bot]

iana/data/iana-ipv4-special-registry-1.csv

@@ -16,6 +16,7 @@ Address Block,Name,RFC,Allocation Date,Termination Date,Source,Destination,Forwa
 192.31.196.0/24,AS112-v4,[RFC7535],2014-12,N/A,True,True,True,True,False
 192.52.193.0/24,AMT,[RFC7450],2014-12,N/A,True,True,True,True,False
 192.88.99.0/24,Deprecated (6to4 Relay Anycast),[RFC7526],2001-06,2015-03,,,,,
+192.88.99.2/32,6a44-relay anycast address,[RFC6751],2012-10,N/A,True,True,True,False,False
 192.168.0.0/16,Private-Use,[RFC1918],1996-02,N/A,True,True,True,False,False
 192.175.48.0/24,Direct Delegation AS112 Service,[RFC7534],1996-01,N/A,True,True,True,True,False
 198.18.0.0/15,Benchmarking,[RFC2544],1999-03,N/A,True,True,True,False,False