[Kea-users] Changing DSCP field in IPv4

Francis Dupont fdupont at isc.org
Mon Jul 17 12:57:38 UTC 2017


Gokulakrishnan Gopalakrishnan writes:
> While sending DHCP Offer, Kea is sending DSCP field
> <http://bogpeople.com/networking/dscp.shtml> in IPV4 as 4 (0001 00) which
> is Unknown. I'd like to set that field as 0 (default: CS0). Can someone
> help me in setting DSCP field as 0?

=> which system? The code sets the field to IPTOS_LOWDELAY for BPF & co,
and does not touch it for UDP (DHCPv6 default, DHCPv4 when dhcp socket
type is configured). This does not seem crazy and for sure should not
raise any problem...

Regards

Francis Dupont <fdupont at isc.org>

PS: ISC DHCP does exactly the same (I suspect the Kea code was just
adapted from it: does not change something which was proved to work).



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