Looks like this can hit us when upgrading to newer versions of Debian...
```
Dec 09 14:34:22 CR1.mucI ipsec[1962]: # deprecated keyword 'interfaces' in config setup
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: # deprecated keyword 'interfaces' in config setup
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: # deprecated keyword 'nat_traversal' in config setup
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: # deprecated keyword 'virtual_private' in config setup
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: # deprecated keyword 'leftnexthop' in conn 'remote-access-win-aaa'
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: # deprecated keyword 'pfs' in conn 'remote-access-win-aaa'
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: PFS is enabled by specifying a DH group in the 'esp' cipher suite
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: # deprecated keyword 'leftnexthop' in conn 'remote-access-mac-zzz'
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: # deprecated keyword 'pfs' in conn 'remote-access-mac-zzz'
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: PFS is enabled by specifying a DH group in the 'esp' cipher suite
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: # deprecated keyword 'leftnexthop' in conn 'remote-access'
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: # deprecated keyword 'pfs' in conn 'remote-access'
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: PFS is enabled by specifying a DH group in the 'esp' cipher suite
Dec 09 14:34:22 CR1.mucI ipsec_starter[1962]: ### 9 parsing errors (0 fatal) ###
Dec 09 14:34:22 CR1.mucI ipsec[1962]: # deprecated keyword 'nat_traversal' in config setup
Dec 09 14:34:22 CR1.mucI ipsec[1962]: # deprecated keyword 'virtual_private' in config setup
Dec 09 14:34:22 CR1.mucI ipsec[1962]: # deprecated keyword 'leftnexthop' in conn 'remote-access-win-aaa'
Dec 09 14:34:22 CR1.mucI ipsec[1962]: # deprecated keyword 'pfs' in conn 'remote-access-win-aaa'
Dec 09 14:34:22 CR1.mucI ipsec[1962]: PFS is enabled by specifying a DH group in the 'esp' cipher suite
Dec 09 14:34:22 CR1.mucI ipsec[1962]: # deprecated keyword 'leftnexthop' in conn 'remote-access-mac-zzz'
Dec 09 14:34:22 CR1.mucI ipsec[1962]: # deprecated keyword 'pfs' in conn 'remote-access-mac-zzz'
Dec 09 14:34:22 CR1.mucI ipsec[1962]: PFS is enabled by specifying a DH group in the 'esp' cipher suite
Dec 09 14:34:22 CR1.mucI ipsec[1962]: # deprecated keyword 'leftnexthop' in conn 'remote-access'
Dec 09 14:34:22 CR1.mucI ipsec[1962]: # deprecated keyword 'pfs' in conn 'remote-access'
Dec 09 14:34:22 CR1.mucI ipsec[1962]: PFS is enabled by specifying a DH group in the 'esp' cipher suite
Dec 09 14:34:22 CR1.mucI ipsec[1962]: ### 9 parsing errors (0 fatal) ###
```