I sat at home on Saturday and set up a router to crack the WEP on my a wifi router. Linksys wrt310n, and none of the injections were working. I eventually was able to get enough IVs to get the hex, but it took 6 hours of sniffing and setting 2 machines to continually ping invalid IP addresses. I tried every type of injection aireplay-ng had, changed my cards mac addy to simulate another machine and everything. Nothing seemed to make the IVs go up any faster. I'm using a centrino based laptop so intel wifi, that is supported, and I was right next to the AP. I was wondering if I'm missing some fundamental part of this. I went through tons of video and blogged tutorials trying to make the injection work, but it just never seemed to work.