Chapter 8 Advanced Expressions: IP and MAC Addresses, Throughput, VLAN IDs 153

You can specify a GET operation to extract segments of IPv6 addresses and URL

paths and apply numeric operations on these segments. Note that with IPv6

addresses, the GET operation returns numbers. This is different from operations

on the entire IPv6 address, which return text.

Operations for IPV6 Prefixes

The following table describes operations on IPv6 IP addresses:

SERVER.IPV6.DST Returns the IPv6 address in the destination field of the
IP header.
SERVER.IPV6.SRC Returns the IPv6 address in the source field of the IP
header. Following are examples:
server.ipv6.src.in_subnet(2007::2008/64)
server.ipv6.src.get1.le(2008)

Operations That Evaluate IPv6 Addresses

IPv6 Operation Description
ipv6.EQ(IPv6_address )Returns a Boolean TRUE if the IP address value is
same as the IPv6_address argument.
Following is an example:
client.ipv6.dst.eq(ABCD:1234::ABCD)
ipv6.GET1. . .GET8 Evaluates a segment of an IPv6 address.
For example, if the ipv6 address is
1000:1001:CD10:0000:0000:89AB:4567:CDEF,
the following values can be returned:
•client.ipv6.dst.get5 extracts 0000,
which is the fifth set of bits in the address.
•client.ipv6.dst.get6 extracts 89AB.
•client.ipv6.dst.get7 extracts 4567.
ipv6.IN_SUBNET(subnet)Returns a Boolean TRUE if the IPv6 address value
is in the subnet specified by the ip subnet
argument.
Following is an example:
client.ipv6.dst.eq(1000:1001:CD10:000
0:0000:89AB:4567:CDEF/60)
ipv6.IS_IPV4 Returns a Boolean TRUE if this is an IPv4 client,
and returns a Boolean FALSE if it is not.

IPv6 Expression Prefixes that Return Text

Prefix Description