Status:
sudo service nginx status
● nginx.service - A high performance web server and a reverse proxy server
   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sat 2016-03-05 09:36:08 EST; 19s ago
  Process: 691 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=1/FAILURE)

Mar 05 09:36:08 eeyore.peacockhosting.net systemd[1]: Starting A high performance web server and a reverse proxy server...
Mar 05 09:36:08 eeyore.peacockhosting.net nginx[691]: nginx: [emerg] bind() to [2604:a880:400:d0::94:9002]:443 failed (99: Cannot assign requested address)
Mar 05 09:36:08 eeyore.peacockhosting.net nginx[691]: nginx: configuration file /etc/nginx/nginx.conf test failed
Mar 05 09:36:08 eeyore.peacockhosting.net systemd[1]: nginx.service: Control process exited, code=exited status=1
Mar 05 09:36:08 eeyore.peacockhosting.net systemd[1]: Failed to start A high performance web server and a reverse proxy server.
Mar 05 09:36:08 eeyore.peacockhosting.net systemd[1]: nginx.service: Unit entered failed state.
Mar 05 09:36:08 eeyore.peacockhosting.net systemd[1]: nginx.service: Failed with result 'exit-code'.

Relevant NGINX config:
  listen [2604:a880:400:d0::94:9002]:80;
  listen [2604:a880:400:d0::94:9002]:443 ssl;

Relevant section from /etc/network/interfaces:
iface eth0 inet6 static
        address 2604:A880:0400:00D0:0000:0000:0094:9001
        netmask 64
        gateway 2604:A880:0400:00D0:0000:0000:0000:0001
        autoconf 0
        dns-nameservers 2001:4860:4860::8844 2001:4860:4860::8888 8.8.8.8

        up ip -6 addr add 2604:A880:0400:00D0:0000:0000:0094:9002/64 dev $IFACE
        down ip -6 addr del 2604:A880:0400:00D0:0000:0000:0094:9002/64 dev $IFACE