I'm too having the problem to update the IPCONFIG.DAT. uLE 4.17 have no problems to update the file but all later versions seem to have this problem. I don't know if this caused by SMS. Not beeing able to edit the ip is for me no problem since i always use the same ip but using older uLE version to change the ip if needed is not the best way.
btw.: Good work dlanor !
PS2 SCPH-70004 V12 PAL + HDCOMBO + 160 GB Samsung HDD + OPL 0.9.1
PS2 SCPH-70004a V13 PAL Satin Silver
2 x Official Sony 8mb card +FMCB 1.8c + uLE 4.42b
Datel Max Memory 32mb card +FMCB 1.8b + uLE 4.42
Memor32 + Memento FW 1.2e