unreliable connection to Netgear 's own n600 router . nightmare tech service . b and no resolution . purchase this modem to run on Comcast with Netgear N600 router . be tell 1 -rrb- need to reset all setting on router to work properly with this modem and want to sell I $ 79 support package for 7 month to help with this -- would not tell I what setting 2 -rrb- be tell that as a loyal customer , they would help I 3 -rrb- after 15 minute of escalation to `` loyal customer program '' , repeat all info , be again offer the $ 79 package , this time for 6 month 4 -rrb- tell I that firmware on router would fix the problem -lrb- I already have intstall latest firmware -rrb- 5 -rrb- be lie to about need to install new `` software '' on router , in addition to firmware and GUI , which have already be upgrade . as far as I can tell , there be no additional `` software '' . Waste of time and money . Problem still not fix . customer insult with harangue for up-charge support and misinformation .