Symbol: GRE_ACK
drivers/net/ppp/pptp.c
226
hdr->gre_hd.flags |= GRE_ACK;
include/uapi/linux/if_tunnel.h
41
#define GRE_IS_ACK(f) ((f) & GRE_ACK)
net/core/flow_dissector.c
742
if (hdr->flags & GRE_ACK)