-(defhost boyle.nsict.org 85.158.42.162)
-(defhost chiark.greenend.org.uk 212.13.197.229)
-(defhost mccoy.flatline.org.uk 80.74.241.31)
-(defhost mythic-ns1 69.56.173.190)
-(defhost mythic-ns2 93.93.128.67)
+(defhost boyle.nsict.org "85.158.42.162")
+(defhost chiark.greenend.org.uk ((:ipv4 "212.13.197.229")
+ (:ipv6 "2001:ba8:1e3::")))
+(defhost mccoy.flatline.org.uk "80.74.241.31")
+(defhost mythic-ns1 ((:ipv4 "69.56.173.190")
+ (:ipv6 "2600:3c00::f03c:91ff:fe96:beac")))
+(defhost mythic-ns2 ((:ipv4 "93.93.128.67")
+ (:ipv6 "2a00:1098:0:80:1000::10")))
+(defhost gandi-ns6 "217.70.177.40")