The base relative to which 'offset' is measured. Possible
values are: - IPV4: Points to the beginning of the IPv4 header.
IPV6: Points to the beginning of the IPv6 header. - TCP:
Points to the beginning of the TCP header, skipping over any
IPv4 options or IPv6 extension headers. Not present for
non-first fragments. - UDP: Points to the beginning of the UDP
header, skipping over any IPv4 options or IPv6 extension
headers. Not present for non-first fragments. required
Enums
Name
Description
UNDEFINED_BASE
A value indicating that the enum field is not set.