XinStellaris opened a new pull request, #1307:
URL: https://github.com/apache/incubator-nuttx-apps/pull/1307
Signed-off-by: 田昕 <tianx...@xiaomi.com>
## Summary
In this patch, dhcp will try to get a random xid. If that fails, dhcp will
use the default xid.
The reason to do so is from RFC2131:
"The 'xid' field is used by the client to match incoming DHCP messages
with pending requests. A DHCP client MUST choose 'xid's in such a
way as to minimize the chance of using an 'xid' identical to one used
by another client. For example, a client may choose a different,
random initial 'xid' each time the client is rebooted, and
subsequently use sequential 'xid's until the next reboot. Selecting
a new 'xid' for each retransmission is an implementation decision. A
client may choose to reuse the same 'xid' or select a new 'xid' for
each retransmitted message."
## Impact
DHCP
## Testing
BL602 tested
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