HOURS 109 net/netfilter/nf_conntrack_pptp.c #define PPTP_GRE_STREAM_TIMEOUT (5 HOURS) HOURS 51 net/netfilter/nf_conntrack_proto_sctp.c #define DAYS * 24 HOURS HOURS 67 net/netfilter/nf_conntrack_proto_tcp.c #define DAYS * 24 HOURS