Certain circumstances can cause the routing table to be modified. You should check the table after these events occur to be sure it is still configured as required.
The routing table might be modified in the following circumstances:
A new interface is configured with the
ifconfig command and there are no existing entries for
the new network number in the routing
table.
You use the route add command to add an entry to the routing table.
Your storage system receives an ICMP/ICMPv6 redirect
packet, which notifies the storage system of a better first-hop router for a particular
destination.
Note:
Your storage system ignores ICMP/ICMPv6 redirect packets if the ip.icmp_ignore_redirect.enable option is on.
Your storage system is rebooted after the
default route in the /etc/rc file is modified.
The default route is added to the routing table on receiving an IPv6 Router Advertisement message.
