IP address delivered by DHCP option 242 have inverted octets. For example, IP address192.168.1.1 is sent as 18.104.22.168
Any Software Version less than 22.214.171.124
The issue is due to a software defect.
The issue will be solved in software 126.96.36.199
Workaround: Force the switch to create another DHCP-Offer packet (I did this by unplugging the cable from the phone and plugging it again causing the dhcp process to be reinitialised from the phone side) and the phone will receive the correct data.