Rich Neswold wrote:
> 'tcpdump' shows that the Wii tries to access an HTTPS server at
> 125.199.254.49. It also shows that trying to connect to this address
> results in an ICMP packet getting returned indicating "Destination
> Host Unreachable". It turns out that no machine in my house can ping -
> or otherwise access - 125.199.254.49. I checked the firewall logfile
> and didn't see any packets getting blocked. 'tcpdump' shows pings
> entering the household interface, but not ever leaving the pppoe
> interface.

Hmm.  What about traceroute(8)?  I show something quite wiierd going on
over there in Japan.  

$ traceroute 125.199.254.49
traceroute to 125.199.254.49 (125.199.254.49), 64 hops max, 40 byte
packets
 1  192.168.2.254 (192.168.2.254)  5.746 ms  2.298 ms  3.149 ms
 2  er1.nyc1.speakeasy.net (216.254.83.1)  16.521 ms  17.092 ms  15.438 ms
 3  220.ge-0-1-0.cr2.nyc1.speakeasy.net (69.17.83.201)  13.915 ms  13.875
ms  12.941 ms
 4  166.90.136.33 (166.90.136.33)  15.023 ms  18.104 ms  12.870 ms
 5  vlan51.csw1.newyork1.level3.net (4.68.97.30)  13.217 ms  25.245 ms 
17.602 ms
 6  ae-64-64.ebr4.newyork1.level3.net (4.69.134.113)  13.261 ms  14.411 ms
 16.805 ms
 7  ae-2.ebr4.sanjose1.level3.net (4.69.135.185)  83.027 ms  90.732 ms 
89.693 ms
 8  ae-94-94.csw4.sanjose1.level3.net (4.69.134.254)  93.029 ms
ae-84-84.csw3.sanjose1.level3.net (4.69.134.250)  84.435 ms
ae-94-94.csw4.sanjose1.level3.net (4.69.134.254)  83.920 m
s
 9  ge-6-2-0-99.bbr1.sanjose1.level3.net (4.68.18.193)  87.571 ms  88.147
ms ge-0-3-0-69.bbr1.sanjose1.level3.net (4.68.18.1)  119.643 ms
10  so-14-0.hsa3.sanjose1.level3.net (4.68.114.154)  126.057 ms  90.477 ms
so-12-0.hsa3.sanjose1.level3.net (4.68.125.146)  88.780 ms
11  kddi-americ.hsa3.sanjose1.level3.net (4.79.58.22)  85.990 ms  87.419
ms  88.379 ms
12  pacbb001.kddnet.ad.jp (124.211.34.53)  111.116 ms  85.590 ms  88.083
ms
13  otecbb103.kddnet.ad.jp (203.181.100.193)  202.790 ms  206.042 ms 
201.736 ms
14  cm-ote138.kddnet.ad.jp (124.211.33.66)  225.930 ms  220.274 ms 
216.901 ms
15  125.29.26.26 (125.29.26.26)  215.739 ms  216.604 ms  215.541 ms
16  122.131.0.30 (122.131.0.30)  220.038 ms  220.779 ms  220.862 ms
17  122.131.0.13 (122.131.0.13)  210.553 ms  208.450 ms  210.744 ms
18  133.205.46.30 (133.205.46.30)  210.893 ms  208.167 ms  210.514 ms
19  133.205.46.65 (133.205.46.65)  209.890 ms  209.959 ms  208.961 ms
20  125.199.254.35 (125.199.254.35)  244.409 ms  221.284 ms *
21  125.199.254.45 (125.199.254.45)  212.350 ms  209.869 ms  209.616 ms
22  125.199.254.35 (125.199.254.35)  221.026 ms  221.784 ms  222.310 ms
23  125.199.254.45 (125.199.254.45)  209.714 ms  209.481 ms  212.388 ms
24  125.199.254.35 (125.199.254.35)  222.002 ms  220.548 ms  221.776 ms
25  125.199.254.45 (125.199.254.45)  208.817 ms  210.754 ms  211.126 ms
26  125.199.254.35 (125.199.254.35)  221.322 ms  219.987 ms  221.232 ms
27  * 125.199.254.45 (125.199.254.45)  213.167 ms  210.722 ms
28  125.199.254.35 (125.199.254.35)  222.220 ms  219.872 ms  222.027 ms
29  125.199.254.45 (125.199.254.45)  208.844 ms  211.298 ms  211.196 ms
30  125.199.254.35 (125.199.254.35)  218.836 ms  220.120 ms  220.140 ms
31  125.199.254.45 (125.199.254.45)  211.090 ms  209.731 ms  210.004 ms
32  125.199.254.35 (125.199.254.35)  221.200 ms  220.863 ms  225.141 ms
33  125.199.254.45 (125.199.254.45)  213.880 ms  208.937 ms  210.105 ms
34  125.199.254.35 (125.199.254.35)  220.227 ms  220.465 ms  223.046 ms
35  * 125.199.254.45 (125.199.254.45)  214.462 ms  212.717 ms
...
62  125.199.254.35 (125.199.254.35)  220.026 ms  221.885 ms *
63  125.199.254.45 (125.199.254.45)  213.316 ms *  215.518 ms
64  125.199.254.35 (125.199.254.35)  222.180 ms  222.451 ms  222.780 ms

ping(8) works though:

$ ping -o 125.199.254.49
PING 125.199.254.49 (125.199.254.49): 56 data bytes
64 bytes from 125.199.254.49: icmp_seq=0 ttl=238 time=213.868 ms

--- 125.199.254.49 ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max/stddev = 213.868/213.868/213.868/0.000 ms

Your description suggests to me that your router is dropping the packets,
whether or not the log says so.  If your traceroute doesn't show you
getting past your default gateway, that'd cinch it.  

HTH.

--jkl