Date: Mon, 7 Nov 2022 02:01:49 +0000 From: spellberg_robert <emailrob@risebroadband.net> To: questions@freebsd.org Subject: --solved-- ; well , mostly ; was: my isp has trouble with its own dhcp assignment Message-ID: <4257bca2-f07a-a29b-847a-b3ba07a7cb8b@risebroadband.net> In-Reply-To: <95dab92e-1f3f-065f-577d-c8ab21dcd577@holgerdanske.com> References: <e25c9c9d-9e6a-c349-d04e-4103b1256f24@risebroadband.net> <ec77cabe-4436-a3da-cbb1-367f481413c9@holgerdanske.com> <184d5515-80af-50b3-593e-6bc379b441df@risebroadband.net> <64f6a7dd-5c99-1c07-8b4f-27a3f2ecc9af@holgerdanske.com> <fd24e5ea-9395-e2cc-42a0-d832a5661fab@risebroadband.net> <95dab92e-1f3f-065f-577d-c8ab21dcd577@holgerdanske.com>
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22_nov_06_sun 25.55.utc
howdy , folks ---
well , as things turned_out , nobody got it right ;
this includes yours_truly .
earlier today ,
in anticipation of a call to "sales" [ closed sundays ] ,
regarding the acquisition of an ipv4_addr ,
i called "tech_support" [ open sundays ] ,
to ask some basic questions regarding such a transition
[ how long after placing the order does the addr become available
[ "a few minutes" ] ;
do the fixed_addr and the dhcp_addr "play well" together ,
during the transition
[ "not really , but , we know about this" ] ;
you get the idea
] .
i decided to ask about this problem , as well ;
after all , i had nothing to lose except some cell_phone minutes .
so , regarding the young_lady who assisted ,
she probes the nic on the old gateway ,
for its dhcp_addr and its mac_addr .
then , she has me swap the boxen and
she probes the nic on the new gateway , similarly .
just like that , the new_gw works just_as_well_as the old_gw .
now , here is why i say "solved , mostly" .
she tells me that the problem is that i had a different mac_addr .
"it's a security thing" , says she .
"you need to call `tech_support' , when you change the mac_addr ."
"if i move the old_nic to the new_gw , when i swap the boxen ,
then i have , still , the old mac_addr ;
do i need to call , still ?" , he inquired , hope_fully .
"no , because , then , the mac_addr has not changed" ,
she replied , re_assuringly .
this is all well_and_good ;
--how_ever-- ,
on 22_sep_25_sun [ 6 weeks ago ] ,
with the new_gw in place [ new mac_addr and new dhcp_addr ] ,
i tried this , for my intel 1000/100/10 nic :
ifconfig em0 old_dhcp_addr add
immediately , the new_gw worked every_bit_as_well_as the old_gw .
thus , on sep_25 , i knew that my network and its config were "ok" .
my guess is that , when packets would arrive w/ the old_dhcp_addr ,
the current_mac_addr was not verified against the old_mac_addr .
thus , those packets were passed .
per_haps , there exists a better explanation .
as yet , at the isp , i had not spoken to any_one about any_thing .
thus , i am not convinced that the young_lady's explanation was
as well_stated as it might have been .
she may be explaining things as well as she understands them .
so , it appears that , over the next several weeks ,
i will be talking to "sales" and "tech_support" .
i have wanted my own mail_server for a_while ;
this means dns , as_well .
the fire_wall will require "interior" and "exterior" gateways .
we shall learn how_much we can accomplish .
--today-- , that which is important is that i have a second working gw ,
in the event of the failure of the existing gw
[ although , i may have to make a phone_call to "tech_support" ] ;
now , i can get on w/ the building of the third gw .
>----> crisis averted <----<
never_the_less , i --do-- have a question .
is there some kind of security issue w/ nic mac_addresses ?
i have been trying to imagine one .
if so , then i suspect that
it relates to activities , which i do not do .
this would explain my lack of imagination .
i do not do lap_tops [ hardware configuration is nearly impossible ] ;
i do not do wi_fi [ eavesdropping ] ;
i do not do windows [ now , really ; do you have to ask why ? ] .
please note that
i am not against these things , for those who wish them ;
different peoples have different ways .
i have programmed ms_dos ; i have used ms_win ;
i have considered lt/wf ; these are not for me .
make mine a dozen of a several_hundred_char_wide xterm .
here is another one .
regard_less of the answer to the above question ,
do other isps do this [ check the mac_addr ] ?
for now , i am treating the original problem as being , both ,
partially_solved and partially_obviated ;
this is subject to revision , after my isp discussions .
i wanted to let folks know that there has been --some-- progress .
again , i thank every_one who responded to the original topic .
my best to all of you and to all of yours .
tia [ for the new questions ]
rob
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